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| author | Török Edwin <edwintorok@gmail.com> | 2008-11-24 10:17:42 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-24 10:00:28 +0100 |
| commit | 7918baa555140989eeee1270f48533987d48fdba (patch) | |
| tree | 553b1bbf141ab4c671e49bb81e14ae82b0f37b6f | |
| parent | e25cf3db560e803292946ef23a30c69e341ce56f (diff) | |
| download | linux-7918baa555140989eeee1270f48533987d48fdba.tar.gz linux-7918baa555140989eeee1270f48533987d48fdba.tar.bz2 linux-7918baa555140989eeee1270f48533987d48fdba.zip | |
mutex: __used is needed for function referenced only from inline asm
Impact: fix build failure on llvm-gcc-4.2
According to the gcc manual, the 'used' attribute should be applied to
functions referenced only from inline assembly.
This fixes a build failure with llvm-gcc-4.2, which deleted
__mutex_lock_slowpath, __mutex_unlock_slowpath.
Signed-off-by: Török Edwin <edwintorok@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | kernel/mutex.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/mutex.c b/kernel/mutex.c index 39a3816b68d9..4f45d4b658ef 100644 --- a/kernel/mutex.c +++ b/kernel/mutex.c @@ -59,7 +59,7 @@ EXPORT_SYMBOL(__mutex_init); * We also put the fastpath first in the kernel image, to make sure the * branch is predicted by the CPU as default-untaken. */ -static void noinline __sched +static __used noinline void __sched __mutex_lock_slowpath(atomic_t *lock_count); /*** @@ -96,7 +96,7 @@ void inline __sched mutex_lock(struct mutex *lock) EXPORT_SYMBOL(mutex_lock); #endif -static noinline void __sched __mutex_unlock_slowpath(atomic_t *lock_count); +static __used noinline void __sched __mutex_unlock_slowpath(atomic_t *lock_count); /*** * mutex_unlock - release the mutex @@ -268,7 +268,7 @@ __mutex_unlock_common_slowpath(atomic_t *lock_count, int nested) /* * Release the lock, slowpath: */ -static noinline void +static __used noinline void __mutex_unlock_slowpath(atomic_t *lock_count) { __mutex_unlock_common_slowpath(lock_count, 1); @@ -313,7 +313,7 @@ int __sched mutex_lock_killable(struct mutex *lock) } EXPORT_SYMBOL(mutex_lock_killable); -static noinline void __sched +static __used noinline void __sched __mutex_lock_slowpath(atomic_t *lock_count) { struct mutex *lock = container_of(lock_count, struct mutex, count); |